Synthesis and characterization of bactericidal silver nanoparticles using cultural filtrate of simulated microgravity grown Klebsiella pneumoniae

► Application of bacterial cultural filtrate cultured under simulated microgravity. ► Simulated microgravity grown bacterial cultural filtrate was able to synthesize silver nanoparticles. ► The synthesized silver nanoparticles were crystalline in nature. ► Possessess strong antibacterial activity against gram negative bacteria.